"vellemon" - 1 õppematerjal

Physical hazards konspekt

• Ф/A = I cos α / r2 • I = Ф r2/ S cos α 4  Lightmeter Vellemon DVM1300 1 lux Lightmeter 1 m2 HTC LX-104 Source: http://www.vellemanusa.com/products/view/?country=us&lang=enu&id=351244